<template>
  <Modal v-bind="getBindValue" :closable="false" @cancel="handleCancel">
    <template #closeIcon v-if="!$slots.closeIcon">
      <ModalClose
        :canFullscreen="getProps.canFullscreen"
        :fullScreen="fullScreenRef"
        @cancel="handleCancel"
        @fullscreen="handleFullScreen"
      />
    </template>

    <template #title v-if="!$slots.title">
      <ModalHeader
        :helpMessage="getProps.helpMessage"
        :title="getMergeProps.title"
        @dblclick="handleTitleDbClick"
      />
    </template>

    <template #footer v-if="!$slots.footer">
      <ModalFooter v-bind="getBindValue" @ok="handleOk" @cancel="handleCancel">
        <template #[item]="data" v-for="item in Object.keys($slots)">
          <slot :name="item" v-bind="data || {}"></slot>
        </template>
      </ModalFooter>
    </template>

    <ModalWrapper
      :useWrapper="getProps.useWrapper"
      :footerOffset="wrapperFooterOffset"
      :fullScreen="fullScreenRef"
      ref="modalWrapperRef"
      :loading="getProps.loading"
      :loading-tip="getProps.loadingTip"
      :minHeight="getProps.minHeight"
      :height="getWrapperHeight"
      :visible="visibleRef"
      :modalFooterHeight="footer !== undefined && !footer ? 0 : undefined"
      v-bind="omit(getProps.wrapperProps, 'visible', 'height', 'modalFooterHeight')"
      @ext-height="handleExtHeight"
      @height-change="handleHeightChange"
    >
      <slot></slot>
    </ModalWrapper>

    <template #[item]="data" v-for="item in Object.keys(omit($slots, 'default'))">
      <slot :name="item" v-bind="data || {}"></slot>
    </template>
  </Modal>
</template>
<script lang="ts">
import type { ModalMethods, ModalProps } from "./typing";

import { omit } from "lodash-es";
import {
computed,
defineComponent,
getCurrentInstance,
nextTick,
ref,
toRef,
unref,
watch,
watchEffect,
} from "vue";
import Modal from "./components/Modal";
import ModalClose from "./components/ModalClose.vue";
import ModalFooter from "./components/ModalFooter.vue";
import ModalHeader from "./components/ModalHeader.vue";
import ModalWrapper from "./components/ModalWrapper.vue";
import { useFullScreen } from "./hooks/useModalFullScreen";
import { basicProps } from "./props";
import { useDesign } from "/@/hooks/web/useDesign";
import { deepMerge } from "/@/utils";
import { isFunction } from "/@/utils/is";

export default defineComponent({
  name: "BasicModal",
  components: { Modal, ModalWrapper, ModalClose, ModalFooter, ModalHeader },
  inheritAttrs: false,
  props: basicProps,
  emits: [
    "visible-change",
    "height-change",
    "cancel",
    "ok",
    "register",
    "update:visible",
  ],
  setup(props, { emit, attrs }) {
    const visibleRef = ref(false);
    const propsRef = ref<Partial<ModalProps> | null>(null);
    const modalWrapperRef = ref<any>(null);
    const { prefixCls } = useDesign("basic-modal");

    // modal   Bottom and top height
    const extHeightRef = ref(0);
    const modalMethods: ModalMethods = {
      setModalProps,
      emitVisible: undefined,
      redoModalHeight: () => {
        nextTick(() => {
          if (unref(modalWrapperRef)) {
            (unref(modalWrapperRef) as any).setModalHeight();
          }
        });
      },
    };

    const instance = getCurrentInstance();
    if (instance) {
      emit("register", modalMethods, instance.uid);
    }

    // Custom title component: get title
    const getMergeProps = computed(
      (): Recordable => {
        return {
          ...props,
          ...(unref(propsRef) as any),
        };
      }
    );

    const { handleFullScreen, getWrapClassName, fullScreenRef } = useFullScreen({
      modalWrapperRef,
      extHeightRef,
      wrapClassName: toRef(getMergeProps.value, "wrapClassName"),
    });

    // modal component does not need title and origin buttons
    const getProps = computed(
      (): Recordable => {
        const opt = {
          ...unref(getMergeProps),
          visible: unref(visibleRef),
          okButtonProps: undefined,
          cancelButtonProps: undefined,
          title: undefined,
        };
        return {
          ...opt,
          wrapClassName: unref(getWrapClassName),
        };
      }
    );

    const getBindValue = computed(
      (): Recordable => {
        const attr = {
          ...attrs,
          ...unref(getMergeProps),
          visible: unref(visibleRef),
          wrapClassName: unref(getWrapClassName),
        };
        if (unref(fullScreenRef)) {
          return omit(attr, ["height", "title"]);
        }
        return omit(attr, "title");
      }
    );

    const getWrapperHeight = computed(() => {
      if (unref(fullScreenRef)) return undefined;
      return unref(getProps).height;
    });

    watchEffect(() => {
      visibleRef.value = !!props.visible;
      fullScreenRef.value = !!props.defaultFullscreen;
    });

    watch(
      () => unref(visibleRef),
      (v) => {
        emit("visible-change", v);
        emit("update:visible", v);
        instance && modalMethods.emitVisible?.(v, instance.uid);
        nextTick(() => {
          if (props.scrollTop && v && unref(modalWrapperRef)) {
            (unref(modalWrapperRef) as any).scrollTop();
          }
        });
      },
      {
        immediate: false,
      }
    );

    // 取消事件
    async function handleCancel(e: Event) {
      e?.stopPropagation();
      // 过滤自定义关闭按钮的空白区域
      if ((e.target as HTMLElement)?.classList?.contains(prefixCls + "-close--custom"))
        return;
      if (props.closeFunc && isFunction(props.closeFunc)) {
        const isClose: boolean = await props.closeFunc();
        visibleRef.value = !isClose;
        return;
      }

      visibleRef.value = false;
      emit("cancel", e);
    }

    /**
     * @description: 设置modal参数
     */
    function setModalProps(props: Partial<ModalProps>): void {
      // Keep the last setModalProps
      propsRef.value = deepMerge(unref(propsRef) || ({} as any), props);
      if (Reflect.has(props, "visible")) {
        visibleRef.value = !!props.visible;
      }
      if (Reflect.has(props, "defaultFullscreen")) {
        fullScreenRef.value = !!props.defaultFullscreen;
      }
    }

    function handleOk(e: Event) {
      emit("ok", e);
    }

    function handleHeightChange(height: string) {
      emit("height-change", height);
    }

    function handleExtHeight(height: number) {
      extHeightRef.value = height;
    }

    function handleTitleDbClick(e) {
      if (!props.canFullscreen) return;
      e.stopPropagation();
      handleFullScreen(e);
    }

    return {
      handleCancel,
      getBindValue,
      getProps,
      handleFullScreen,
      fullScreenRef,
      getMergeProps,
      handleOk,
      visibleRef,
      omit,
      modalWrapperRef,
      handleExtHeight,
      handleHeightChange,
      handleTitleDbClick,
      getWrapperHeight,
    };
  },
});
</script>
